Features
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GaAs HBT
InGaP HBT
GaAs MESFET
SiGe BiCMOS
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GaN HEMT
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Product Description
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
RF MEMS
SGA-4263(Z)
DC to 3500MHz, CASCADABLE SiGe HBT
MMIC AMPLIFIER
The SGA-4263 is a high performance SiGe HBT MMIC Amplifier. A Darling-
ton configuration featuring one-micron emitters provides high F
T
and
excellent thermal performance. The heterojunction increases breakdown
voltage and minimizes leakage current between junctions. Cancellation of
emitter junction non-linearities results in higher suppression of intermodu-
lation products. Only two DC-blocking capacitors, a bias resistor, and an
optional RF choke are required for operation.
0
4
8
12
16
0123456
Frequenc y (GH z)
Gain (dB)
-40
-30
-20
-10
0
Return Loss (dB)
GAIN
IRL
ORL
Gain & Return Loss vs. Frequency
VD= 3.2 V, ID= 45 mA (Typ.)
Available in Lead Free, RoHS
Compliant, and Green Pack-
aging (Z Part Number)
Broadband Operation: DC to
3500MHz
Cascadable 50
Operates from Single Supply
Low Thermal Resistance
Package
Applications
PA Driver Amplifier
Cellular, PCS, GSM, UMTS
IF Amplifier
Wireless Data, Satellite
DS091118
Package: SOT-363
SGA-4263(Z)
DC to
3500MHz,
Cascadable
SiGe HBT
MMIC Ampli-
fier
Parameter Specification Unit Condition
Min. Typ. Max.
Small Signal Gain 12.5 14.0 15.5 dB 850MHz
12.7 dB 1950MHz
12.4 dB 2400MHz
Output Power at 1dB Compression 14.2 dBm 850MHz
12.5 dBm 1950MHz
Output Third Intercept Point 29.3 dBm 850MHz
25.7 dBm 1950MHz
Bandwidth Determined by Return
Loss 3500 MHz >10dB
Input Return Loss 31.3 dB 1950MHz
Output Return Loss 13.8 dB 1950MHz
Noise Figure 3.7 dB 1950MHz
Device Operating Voltage 2.9 3.2 3.5 V
Device Operating Current 41 45 49 mA
Thermal Resistance
(Junction - Lead) 255 °C/W
Test Conditions: V
S
=8V, I
D
=45mA Typ., OIP
3
Tone Spacing=1MHz, P
OUT
per tone=-5dBm, R
BIAS
=110, T
L
=25°C, Z
S
=Z
L
=50
2 of 8 DS091118
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SGA-4263(Z)
Typical Performance with 2.45GHz Application Circuit
Absolute Maximum Ratings
Parameter Rating Unit
Max Device Current (I
D
)90mA
Max Device Voltage (V
D
)5V
Max RF Input Power +18 dBm
Max Junction Temp (T
J
)+150°C
Operating Temp Range (T
L
) -40 to +85 °C
Max Storage Temp +150 °C
Operation of this device beyond any one of these limits may cause permanent dam-
age. For reliable continuous operation, the device voltage and current must not
exceed the maximum operating values specified in the table on page one.
Bias Conditions should also satisfy the following expression:
I
D
V
D
<(T
J
-T
L
)/R
TH
, j-l
Parameter Unit 100
MHz
500
MHz
850
MHz
1950
MHz
2400
MHz
3500
MHz
Small Signal Gain dB 14.113.914.012.712.411.3
Output Third Order Intercept Point dBm 29.5 29.3 25.7 23.6
Output Power at 1dB Compression dBm 14.1 14.2 12.5 11.3
Input Return Loss dB 27.5 31.8 29.4 31.3 33.1 18.3
Output Return Loss dB 23.4 22.0 21.7 13.8 12.2 11.7
Reverse Isolation dB 17.7 18.3 18.5 19.0 19.0 18.2
Noise Figure dB 3.6 3.4 3.7 4.3
Test Conditions: V
S
=8V, I
D
=45mA Typ., OIP
3
Tone Spacing = 1 MHz, P
OUT
per tone=-10dBm, R
BIAS
=100, T
L
=25°C, Z
S
=Z
L
=50
Caution! ESD sensitive device.
Exceeding any one or a combination of the Absolute Maximum Rating conditions may
cause permanent damage to the device. Extended application of Absolute Maximum
Rating conditions to the device may reduce device reliability. Specified typical perfor-
mance or functional operation of the device under Absolute Maximum Rating condi-
tions is not implied.
RoHS status based on EUDirective 2002/95/EC (at time of this document revision).
The information in this publication is believed to be accurate and reliable. However, no
responsibility is assumed by RF Micro Devices, Inc. ("RFMD") for its use, nor for any
infringement of patents, or other rights of third parties, resulting from its use. No
license is granted by implication or otherwise under any patent or patent rights of
RFMD. RFMD reserves the right to change component circuitry, recommended appli-
cation circuitry and specifications at any time without prior notice.
3 of 8DS091118
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SGA-4263(Z)
TL
15
20
25
30
35
00.511.522.53
Fr e q uency ( GHz)
OIP3 (dBm)
6
9
12
15
18
00.511.522.53
Frequency (GHz)
P1dB (dBm)
TL=+25ºC TL=+25ºC
OIP3 vs. Frequency
VD=3.2 V, ID= 45 mA (Typ.) P1dB vs. Frequency
VD= 3.2 V, ID= 45 mA (Typ.)
T
L
=+25ºC
0
1
2
3
4
5
00.511.522.53
Frequency (GHz)
Noise Figure (d B)
T
L
=+25ºC
Noise Figure vs. Frequency
V
D
= 3.2 V, I
D
= 45 mA (Typ.)
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SGA-4263(Z)
-30
-25
-20
-15
-10
0123456
Frequency (GHz)
S
12
(dB)
+25°C
-40°C
+85°C
0
5
10
15
20
0123456
Frequency (GHz)
S
21
(dB)
+25°C
-40°C
+85°C
-40
-30
-20
-10
0
0123456
Frequency (GHz)
S
22
(dB)
+25°C
-40°C
+85°C
T
L
TL
TL-40
-30
-20
-10
0
0123456
Frequency (GHz)
S
11
(dB)
+25°C
-40°C
+85°C
TL
|S11| vs. Frequency|S21| vs. Frequency
|S12| vs. Frequency |S22| vs. Frequency
Typical RF Performance Over Temperature ( Bias: VD= 3.2 V, ID= 45 mA (Typ.) )
5 of 8DS091118
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
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SGA-4263(Z)
Suggested Pad Layout
Package Drawing
Dimensions in inches (millimeters)
Refer to drawing posted at www.rfmd.com for tolerances.
Pin Function Description
3RF IN
RF input pin. This pin requires the use of an external DC-blocking capacitor chosen for the frequency of operation.
1, 2,
4, 5
GND Connection to ground. For optimum RF performance, use via holes as close to ground leads as possible to reduce lead
inductance as close to ground leads as possible.
6RF OUT/BIAS
RF output and bias pin. DC voltage is present on this pin, therefor a DC-blocking capacitor is necessary for proper opera-
tion.
Preliminary
Dimensions in inches [millimeters]
RF
OUT
RF
I N
Notes:
1. Provide a large ground pad area under device
pins 1, 2, 4, & 5 with many plated via holes as
shown.
2. Dimensions given for 50 Ohm RF I/O lines are for
31 mil thick Getek. Scale accordingly for different
board thicknesses and dielectric contants.
3. We recommend 1 or 2 ounce copper. Measure-
ments for this data sheet were made on a 31 mil
thick Getek with 1 ounce copper on both sides.
6 of 8 DS091118
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SGA-4263(Z)
Application Schematic
Evaluation Board Layout
Mounting Instructions:
1. Use a large ground pad area near device pins 1, 2, 4, and 5 with many plated through-holes, as shown.
2. We recommend 1 or 2 ounces copper. Measurements for this data sheet were made on a 31mil thick FR-4 board with 1
ounce cooper on both sides.
RF in RF out
1 uF
CB
CB
CD
VS
RBIAS
LC
3
4,5
6
1,2
1000
pF
SGA-4263
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SAIB
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7 of 8DS091118
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SGA-4263(Z)
Part Identification Marking
Alternate Marking with Trace Code Only
Ordering Information
A42Z
6 5 4
1 2 3
6 5 4
1 2 3
A42
Part Num ber Reel Size Devices/Reel
SGA-4263 7" 3000
SGA-4263Z 7" 3000
8 of 8 DS091118
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
SGA-4263(Z)